S
M
T
W
T
F
S
26
86°
68°
27
88°
63°
28
87°
63°
29
87°
67°
30
90°
65°
31
89°
65°
1
90°
64°
2
88°
64°
3
87°
63°
4
86°
63°
5
87°
64°
6
87°
64°
7
88°
65°
8
86°
65°
9
87°
69°
10
87°
68°
11
88°
63°
12
88°
67°
13
93°
63°
14
92°
62°
15
86°
61°
16
86°
62°
17
87°
65°
18
91°
63°
19
85°
62°
20
83°
60°
21
84°
61°
22
85°
63°
23
84°
59°
24
83°
60°
25
83°
66°
26
85°
66°
27
89°
65°
28
90°
65°
29
90°
59°
30
89°
58°
31
82°
60°
1
84°
63°
2
84°
64°
3
85°
61°
4
83°
63°
5
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mentor
Mentor's August 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 58° and 69°. The average high for August is 87° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mentor. See also: September | October | November.